All connections have to be denoted by a bold dot in the piping draw. It also helps understand the elevations and depression directions properly ConnectionsĬonnections made using welding, soldering or gluing have to be shown on the isometric drawing. The north arrow is drawn to denote the direction in which the pipes in the piping system run.
The simple trigonometry and pythagoras theorem is used to determine the pipe length with the offset. In case a 45 degree elbow or an old nozzle is used in such cases the piping offset is used. Offset is present in the design when a pipe with move in an angle other than 90 degree. Here are a few things to keep in mind about how to draw isometric piping and how to read isometric piping.
The outer fittings are not considered for measuring. Isometric piping draw represent the centerline of the pipe.The dimensions are measured from the centerline of the pipe.
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